Plex has added the ability to record FREE Over The Air TV. Another option for those who want to cut the cable cord.
There is a fee - monthly or a lifetime subscription. I'm not sure whose life it is, but it's probably the digital tuner's...
I recently picked up two Fire TV boxes on Prime Day for $69.99 each. I installed Plex and Kodi on both, among lots of other apps. I find that we don't use Plex very much. I linked it up to a 3TB external drive that houses all our owned media (movies, music, photos, home video, recorded TV). It's quick to set up and looks good, but just doesn't do much. I'm not a Plex Pass subscriber.
Kodi on Fire TV is our home base. We use it every day, mainly because we get live OTA TV along with DVR functionality and online guide. We also have an old laptop running Kodi with an HDHomeRun tuner. The laptop acts as a server, which feeds live TV and DVR functionality to the two Fire TV boxes. Kodi also accesses all our owned media on the external drive, same as Plex.
Plex is a commercial spin-off of Kodi, which is open source. So you have to pay to get the more advanced features on Plex, which are free with Kodi. Kodi is a bit more effort to set up initially and if you need support, you search on Google.
I really like the Fire TV box. Voice search with Alexa on the remote is very useful. The Netflix app is far superior to the one we were running on our Vizio smart TVs. And we finally have easy access to Amazon Prime video, music, etc. Lots of other apps and content as well.